code: def __init__(self, plot_spec: Dict) -> None:
      super().__init__()
      self.data_object = (LETS_PLOT_JSON, plot_spec)
  
file_path: lets-plot/python-package/lets_plot/frontend_context/_intellij_python_json_ctx.py
imports: from typing import Dict, Tuple
  from ._frontend_ctx import FrontendContext
  from ._mime_types import LETS_PLOT_JSON
  from .._type_utils import standardize_dict
label_desc: Use image node_id 1 to create a new DisplayDataObject object  with example: obj = DisplayDataObject(plot_spec)